SP!RE
°°°°°°
In general, for any residential construction building in Toronto at least, for people who don't know: If you can get a hold of a hard hat and steel toe boots, you can walk around the site freely during construction hours and nobody will hassle you. Better to perhaps walk at a brisk pace because if you mill around slowly you will stand out.
Lots of non-construction workers are on construction sites all the time ... like management, office personnel, delivery-people, engineers, etc. Just because workers don't recognize you doesn't mean they won't just assume you are on the site for some reason not related to their own precise trade.
What a foolish piece of advice to give to someone else, let alone yourself. You can't just walk around a construction site with no knowledge of what is going on around you. Good God...